Subject: Re: dermatomes Date: 28 Oct 1999 05:36:03 GMT From: judyandjfk@aol.com (JudyandJFK) Organization: AOL http://www.aol.com Newsgroups: alt.conspiracy.jfk >Subject: Re: dermatomes >From: "John Hunt" jmhjr@efortress.com >Date: Thu, 28 October 1999 12:25 AM EDT >Message-id: > > >JudyandJFK wrote in message ><19991027181110.13316.00001592@ng-fh1.aol.com>... >>>Subject: Re: dermatomes >>>From: "John Hunt" jmhjr@efortress.com >>>Date: Wed, 27 October 1999 09:54 AM EDT >>>Message-id: >>> >>> >>>AnthonyMarsh wrote in message <38167D23.2023ED14@quik.com>... >>>>John, >>>>This chart shows which nerves lead to which parts (and control the >>>>reflex movements of) of the body from the spinal cord. Notice where >>>>C7/C8/T1 go. That is one reason why I think the bullet hit between C7 >>>>and T1 and excited the nerves at that level rather than at the level of >>>>T3. Likewise a bullet entering a couple of inches higher would more >>>>likely affect the parts of the body controlled by nerves coming from >>>>C5/C6. >>>> >>>>-- >>>>Anthony Marsh >>>>The Puzzle Palace http://www.boston.quik.com/amarsh >>> >>>Anthony, >>> >>>Do you have a version which shows the posterior nerve distribution?? >>> >>>John >> >>John and Anthony, >>I have been saying that for over a year, it was also the drmatone patterns >>which helped convinced me of the location. Gee, I get no respect >grin<. > >Hello, Judy, > >What mussles would be responsible for raising an arm a la JFK (post-sign) in >the Z-film?? And where on the nerve chart would those be?? I would guess >C8ish. > >John Well, that is not quite as easy to answer as it sounds. Essentially C5 -T1 will control the shoulders and upper arms. These would include the major muscles like the Trapezius and deltoid muscles. And you also have C6-T2 contolling the arm and hand muscles, tricepts, and radial and ulna muscles. I am not listing every muscle, please understand. But, it is really not like 1 nerve moves the deltoid muscle. Let me quote from a book so I will not be accused of falsifying information. It is the ATLAS OF THE HUMAN BODY, I like it better then Grays, only because shorter and easier. Quote: Each spinal nerve extends from two places, the front and the back of the spinal cord. These are termed the anterior root and posterior root. The anterior root comprises motor neurons and sympathetic neurons, and the posterior root is made up of sensory neurons and parasympatheitic neurons. The posterior root bulges, forming the spinal ganglion, and joins the anterior root. The nerve bifurcates again, however, to become the anterior branch and posterior branch. The posterior branch spreads throughout the back. In contrast, the anterior branch (with the exception of the thoracic nerves) forms networks called nerve plexus by uniting in a complex manner with neighboring nerve fibers. The nerves exit from the plexus to control various parts of the body. Stop quote Now if you look up the brachial plexus, which gets a lot of air time on these groups, it will say it is formed by the union of the anterior division of the four lower cervical and the greater part of the first thoracic nerve. I will simplify the muscle groups by referring to the shoulder and arms and hands. The brachial plexus also communicates with the Cervical plexus, which is also responsible for some innervation via the phrenic nerve (4th cervical) to the diaphragm, as well as the posterior triangle of the sternomastoid muscle and Trapezius and Levator scapula muscles. There is some sharing of nerves by each plexus, so there can be variation from individual to individual. However, these variations are why the dermatome patterns are significant. It is the patterns of how things work, moreso then 1 individual nerve. Hope this helps. Judy HSCA: The pre-autopsy radiograph of the chest shows air in the soft tissues of the right supraclavicular area soft tissues. There is an undisplaced fracture of the proximal portion of the right transverse process of T1.